********************************************************************** * * * I E R S B U L L E T I N - A * * * * Rapid Service/Prediction of Earth Orientation * ********************************************************************** 23 December 2010 Vol. XXIII No. 051 ______________________________________________________________________ GENERAL INFORMATION: To receive this information electronically, contact: ser7@maia.usno.navy.mil or use MJD = Julian Date - 2 400 000.5 days UT2-UT1 = 0.022 sin(2*pi*T) - 0.012 cos(2*pi*T) - 0.006 sin(4*pi*T) + 0.007 cos(4*pi*T) where pi = 3.14159265... and T is the date in Besselian years. TT = TAI + 32.184 seconds DUT1= (UT1-UTC) transmitted with time signals = -0.1 seconds beginning 3 June 2010 at 0000 UTC = -0.2 seconds beginning 6 January 2011 at 0000 UTC Beginning 1 January 2009: TAI-UTC(BIPM) = 34.000 000 seconds ________________________________________________________________________ The contributed observations used in the preparation of this Bulletin are available at . The contributed analysis results are based on data from Very Long Baseline Interferometry (VLBI), Satellite Laser Ranging (SLR), the Global Positioning System (GPS) satellites, Lunar Laser Ranging (LLR), and meteorological predictions of variations in Atmospheric Angular Momentum (AAM). ________________________________________________________________________ COMBINED EARTH ORIENTATION PARAMETERS: IERS Rapid Service MJD x error y error UT1-UTC error " " " " s s 10 12 17 55547 0.16490 .00009 0.21967 .00009 -0.132044 0.000010 10 12 18 55548 0.16415 .00009 0.21877 .00009 -0.132429 0.000012 10 12 19 55549 0.16317 .00009 0.21772 .00009 -0.132695 0.000012 10 12 20 55550 0.16145 .00009 0.21662 .00009 -0.132825 0.000012 10 12 21 55551 0.15926 .00009 0.21546 .00009 -0.132916 0.000011 10 12 22 55552 0.15707 .00009 0.21432 .00009 -0.133098 0.000011 10 12 23 55553 0.15475 .00009 0.21335 .00009 -0.133458 0.000011 _______________________________________________________________________ PREDICTIONS: The following formulas will not reproduce the predictions given below, but may be used to extend the predictions beyond the end of this table. x = 0.0928 + 0.0228 cos A - 0.1131 sin A + 0.0414 cos C - 0.0181 sin C y = 0.3307 - 0.1021 cos A - 0.0135 sin A - 0.0181 cos C - 0.0414 sin C UT1-UTC = -0.1299 - 0.00075 (MJD - 55561) - (UT2-UT1) where A = 2*pi*(MJD-55553)/365.25 and C = 2*pi*(MJD-55553)/435. TAI-UTC(MJD 55554) = 34.0 The accuracy may be estimated from the expressions: S x,y = 0.00068 (MJD-55553)**0.80 S t = 0.00025 (MJD-55553)**0.75 Estimated accuracies are: Predictions 10 d 20 d 30 d 40 d Polar coord's 0.004 0.007 0.010 0.013 UT1-UTC 0.0014 0.0024 0.0032 0.0040 MJD x(arcsec) y(arcsec) UT1-UTC(sec) 2010 12 24 55554 0.1526 0.2123 -0.13405 2010 12 25 55555 0.1505 0.2114 -0.13487 2010 12 26 55556 0.1485 0.2107 -0.13586 2010 12 27 55557 0.1465 0.2100 -0.13693 2010 12 28 55558 0.1445 0.2093 -0.13795 2010 12 29 55559 0.1424 0.2086 -0.13879 2010 12 30 55560 0.1404 0.2080 -0.13941 2010 12 31 55561 0.1383 0.2074 -0.13980 2011 1 1 55562 0.1362 0.2068 -0.13998 2011 1 2 55563 0.1341 0.2063 -0.14006 2011 1 3 55564 0.1320 0.2058 -0.14012 2011 1 4 55565 0.1299 0.2053 -0.14021 2011 1 5 55566 0.1279 0.2049 -0.14039 2011 1 6 55567 0.1258 0.2045 -0.14066 2011 1 7 55568 0.1237 0.2041 -0.14105 2011 1 8 55569 0.1216 0.2038 -0.14155 2011 1 9 55570 0.1196 0.2035 -0.14212 2011 1 10 55571 0.1175 0.2033 -0.14271 2011 1 11 55572 0.1154 0.2031 -0.14330 2011 1 12 55573 0.1133 0.2029 -0.14386 2011 1 13 55574 0.1112 0.2027 -0.14434 2011 1 14 55575 0.1092 0.2026 -0.14472 2011 1 15 55576 0.1071 0.2025 -0.14500 2011 1 16 55577 0.1050 0.2025 -0.14520 2011 1 17 55578 0.1030 0.2024 -0.14539 2011 1 18 55579 0.1009 0.2024 -0.14562 2011 1 19 55580 0.0989 0.2025 -0.14600 2011 1 20 55581 0.0968 0.2026 -0.14659 2011 1 21 55582 0.0948 0.2027 -0.14744 2011 1 22 55583 0.0928 0.2028 -0.14853 2011 1 23 55584 0.0908 0.2030 -0.14976 2011 1 24 55585 0.0887 0.2032 -0.15102 2011 1 25 55586 0.0867 0.2034 -0.15215 2011 1 26 55587 0.0847 0.2037 -0.15309 2011 1 27 55588 0.0828 0.2040 -0.15379 2011 1 28 55589 0.0808 0.2043 -0.15429 2011 1 29 55590 0.0788 0.2046 -0.15466 2011 1 30 55591 0.0769 0.2050 -0.15496 2011 1 31 55592 0.0749 0.2054 -0.15528 2011 2 1 55593 0.0730 0.2059 -0.15566 2011 2 2 55594 0.0711 0.2064 -0.15616 2011 2 3 55595 0.0692 0.2069 -0.15679 2011 2 4 55596 0.0673 0.2074 -0.15754 2011 2 5 55597 0.0654 0.2080 -0.15839 2011 2 6 55598 0.0635 0.2086 -0.15929 2011 2 7 55599 0.0617 0.2092 -0.16019 2011 2 8 55600 0.0598 0.2098 -0.16106 2011 2 9 55601 0.0580 0.2105 -0.16186 2011 2 10 55602 0.0562 0.2112 -0.16257 2011 2 11 55603 0.0544 0.2120 -0.16319 2011 2 12 55604 0.0527 0.2127 -0.16372 2011 2 13 55605 0.0509 0.2135 -0.16420 2011 2 14 55606 0.0492 0.2143 -0.16471 2011 2 15 55607 0.0475 0.2152 -0.16530 2011 2 16 55608 0.0458 0.2161 -0.16609 2011 2 17 55609 0.0441 0.2169 -0.16713 2011 2 18 55610 0.0424 0.2179 -0.16843 2011 2 19 55611 0.0408 0.2188 -0.16994 2011 2 20 55612 0.0392 0.2198 -0.17152 2011 2 21 55613 0.0376 0.2208 -0.17305 2011 2 22 55614 0.0360 0.2218 -0.17438 2011 2 23 55615 0.0345 0.2229 -0.17546 2011 2 24 55616 0.0329 0.2239 -0.17629 2011 2 25 55617 0.0314 0.2250 -0.17693 2011 2 26 55618 0.0299 0.2261 -0.17747 2011 2 27 55619 0.0284 0.2273 -0.17799 2011 2 28 55620 0.0270 0.2284 -0.17857 2011 3 1 55621 0.0256 0.2296 -0.17925 2011 3 2 55622 0.0242 0.2308 -0.18006 2011 3 3 55623 0.0228 0.2320 -0.18099 2011 3 4 55624 0.0215 0.2333 -0.18203 2011 3 5 55625 0.0201 0.2346 -0.18313 2011 3 6 55626 0.0188 0.2358 -0.18425 2011 3 7 55627 0.0176 0.2372 -0.18534 2011 3 8 55628 0.0163 0.2385 -0.18636 2011 3 9 55629 0.0151 0.2398 -0.18728 2011 3 10 55630 0.0139 0.2412 -0.18810 2011 3 11 55631 0.0127 0.2426 -0.18883 2011 3 12 55632 0.0116 0.2440 -0.18949 2011 3 13 55633 0.0104 0.2454 -0.19015 2011 3 14 55634 0.0094 0.2468 -0.19087 2011 3 15 55635 0.0083 0.2483 -0.19174 2011 3 16 55636 0.0072 0.2497 -0.19284 2011 3 17 55637 0.0062 0.2512 -0.19421 2011 3 18 55638 0.0052 0.2527 -0.19583 2011 3 19 55639 0.0043 0.2542 -0.19763 2011 3 20 55640 0.0034 0.2557 -0.19947 2011 3 21 55641 0.0025 0.2573 -0.20118 2011 3 22 55642 0.0016 0.2588 -0.20267 2011 3 23 55643 0.0007 0.2604 -0.20389 2011 3 24 55644 -0.0001 0.2620 -0.20488 2011 3 25 55645 -0.0009 0.2635 -0.20572 2011 3 26 55646 -0.0016 0.2651 -0.20651 2011 3 27 55647 -0.0024 0.2668 -0.20731 2011 3 28 55648 -0.0031 0.2684 -0.20819 2011 3 29 55649 -0.0037 0.2700 -0.20917 2011 3 30 55650 -0.0044 0.2716 -0.21026 2011 3 31 55651 -0.0050 0.2733 -0.21144 2011 4 1 55652 -0.0056 0.2750 -0.21267 2011 4 2 55653 -0.0061 0.2766 -0.21392 2011 4 3 55654 -0.0067 0.2783 -0.21515 2011 4 4 55655 -0.0072 0.2800 -0.21629 2011 4 5 55656 -0.0076 0.2817 -0.21734 2011 4 6 55657 -0.0081 0.2834 -0.21826 2011 4 7 55658 -0.0085 0.2850 -0.21907 2011 4 8 55659 -0.0089 0.2868 -0.21979 2011 4 9 55660 -0.0092 0.2885 -0.22047 2011 4 10 55661 -0.0095 0.2902 -0.22117 2011 4 11 55662 -0.0098 0.2919 -0.22196 2011 4 12 55663 -0.0101 0.2936 -0.22291 2011 4 13 55664 -0.0103 0.2953 -0.22410 2011 4 14 55665 -0.0105 0.2971 -0.22552 2011 4 15 55666 -0.0107 0.2988 -0.22715 2011 4 16 55667 -0.0109 0.3005 -0.22888 2011 4 17 55668 -0.0110 0.3023 -0.23057 2011 4 18 55669 -0.0111 0.3040 -0.23210 2011 4 19 55670 -0.0111 0.3057 -0.23338 2011 4 20 55671 -0.0112 0.3075 -0.23440 2011 4 21 55672 -0.0112 0.3092 -0.23523 2011 4 22 55673 -0.0111 0.3109 -0.23595 2011 4 23 55674 -0.0111 0.3126 -0.23665 2011 4 24 55675 -0.0110 0.3144 -0.23742 2011 4 25 55676 -0.0109 0.3161 -0.23826 2011 4 26 55677 -0.0107 0.3178 -0.23920 2011 4 27 55678 -0.0106 0.3195 -0.24022 2011 4 28 55679 -0.0104 0.3213 -0.24128 2011 4 29 55680 -0.0101 0.3230 -0.24236 2011 4 30 55681 -0.0099 0.3247 -0.24340 2011 5 1 55682 -0.0096 0.3264 -0.24438 2011 5 2 55683 -0.0093 0.3281 -0.24524 2011 5 3 55684 -0.0090 0.3298 -0.24598 2011 5 4 55685 -0.0086 0.3315 -0.24660 2011 5 5 55686 -0.0082 0.3331 -0.24711 2011 5 6 55687 -0.0078 0.3348 -0.24756 2011 5 7 55688 -0.0074 0.3365 -0.24800 2011 5 8 55689 -0.0069 0.3381 -0.24850 2011 5 9 55690 -0.0064 0.3398 -0.24913 2011 5 10 55691 -0.0059 0.3414 -0.24995 2011 5 11 55692 -0.0053 0.3431 -0.25096 2011 5 12 55693 -0.0048 0.3447 -0.25215 2011 5 13 55694 -0.0042 0.3463 -0.25346 2011 5 14 55695 -0.0036 0.3479 -0.25478 2011 5 15 55696 -0.0029 0.3495 -0.25598 2011 5 16 55697 -0.0023 0.3511 -0.25698 2011 5 17 55698 -0.0016 0.3526 -0.25774 2011 5 18 55699 -0.0008 0.3542 -0.25827 2011 5 19 55700 -0.0001 0.3557 -0.25865 2011 5 20 55701 0.0007 0.3573 -0.25898 2011 5 21 55702 0.0014 0.3588 -0.25934 2011 5 22 55703 0.0022 0.3603 -0.25977 2011 5 23 55704 0.0031 0.3618 -0.26028 2011 5 24 55705 0.0039 0.3633 -0.26087 2011 5 25 55706 0.0048 0.3647 -0.26150 2011 5 26 55707 0.0057 0.3662 -0.26214 2011 5 27 55708 0.0066 0.3676 -0.26274 2011 5 28 55709 0.0075 0.3690 -0.26327 2011 5 29 55710 0.0085 0.3704 -0.26369 2011 5 30 55711 0.0095 0.3718 -0.26398 2011 5 31 55712 0.0105 0.3732 -0.26414 2011 6 1 55713 0.0115 0.3746 -0.26418 2011 6 2 55714 0.0125 0.3759 -0.26414 2011 6 3 55715 0.0136 0.3772 -0.26408 2011 6 4 55716 0.0146 0.3785 -0.26406 2011 6 5 55717 0.0157 0.3798 -0.26415 2011 6 6 55718 0.0168 0.3811 -0.26440 2011 6 7 55719 0.0180 0.3823 -0.26484 2011 6 8 55720 0.0191 0.3836 -0.26543 2011 6 9 55721 0.0202 0.3848 -0.26614 2011 6 10 55722 0.0214 0.3860 -0.26685 2011 6 11 55723 0.0226 0.3872 -0.26749 2011 6 12 55724 0.0238 0.3883 -0.26795 2011 6 13 55725 0.0250 0.3895 -0.26819 2011 6 14 55726 0.0263 0.3906 -0.26822 2011 6 15 55727 0.0275 0.3917 -0.26808 2011 6 16 55728 0.0288 0.3928 -0.26785 2011 6 17 55729 0.0300 0.3939 -0.26762 2011 6 18 55730 0.0313 0.3949 -0.26746 2011 6 19 55731 0.0326 0.3959 -0.26739 2011 6 20 55732 0.0339 0.3969 -0.26739 2011 6 21 55733 0.0353 0.3979 -0.26743 2011 6 22 55734 0.0366 0.3989 -0.26748 2011 6 23 55735 0.0379 0.3998 -0.26749 2011 6 24 55736 0.0393 0.4007 -0.26740 2011 6 25 55737 0.0407 0.4016 -0.26719 2011 6 26 55738 0.0420 0.4025 -0.26682 2011 6 27 55739 0.0434 0.4033 -0.26628 2011 6 28 55740 0.0448 0.4041 -0.26559 2011 6 29 55741 0.0462 0.4050 -0.26478 2011 6 30 55742 0.0476 0.4057 -0.26391 2011 7 1 55743 0.0491 0.4065 -0.26307 2011 7 2 55744 0.0505 0.4072 -0.26233 2011 7 3 55745 0.0519 0.4080 -0.26176 2011 7 4 55746 0.0534 0.4087 -0.26142 2011 7 5 55747 0.0548 0.4093 -0.26127 2011 7 6 55748 0.0563 0.4100 -0.26126 2011 7 7 55749 0.0577 0.4106 -0.26130 2011 7 8 55750 0.0592 0.4112 -0.26129 2011 7 9 55751 0.0606 0.4118 -0.26114 2011 7 10 55752 0.0621 0.4123 -0.26082 2011 7 11 55753 0.0636 0.4129 -0.26031 2011 7 12 55754 0.0651 0.4134 -0.25966 2011 7 13 55755 0.0665 0.4139 -0.25895 2011 7 14 55756 0.0680 0.4143 -0.25826 2011 7 15 55757 0.0695 0.4148 -0.25765 2011 7 16 55758 0.0710 0.4152 -0.25717 2011 7 17 55759 0.0725 0.4156 -0.25683 2011 7 18 55760 0.0740 0.4160 -0.25662 2011 7 19 55761 0.0755 0.4163 -0.25651 2011 7 20 55762 0.0770 0.4166 -0.25645 2011 7 21 55763 0.0784 0.4170 -0.25641 2011 7 22 55764 0.0799 0.4172 -0.25632 2011 7 23 55765 0.0814 0.4175 -0.25617 2011 7 24 55766 0.0829 0.4177 -0.25592 2011 7 25 55767 0.0844 0.4179 -0.25555 2011 7 26 55768 0.0859 0.4181 -0.25510 2011 7 27 55769 0.0873 0.4183 -0.25461 2011 7 28 55770 0.0888 0.4184 -0.25417 2011 7 29 55771 0.0903 0.4186 -0.25386 2011 7 30 55772 0.0918 0.4187 -0.25378 2011 7 31 55773 0.0932 0.4187 -0.25396 2011 8 1 55774 0.0947 0.4188 -0.25438 2011 8 2 55775 0.0961 0.4188 -0.25498 2011 8 3 55776 0.0976 0.4188 -0.25567 2011 8 4 55777 0.0990 0.4188 -0.25638 2011 8 5 55778 0.1005 0.4188 -0.25705 2011 8 6 55779 0.1019 0.4187 -0.25756 2011 8 7 55780 0.1033 0.4186 -0.25779 2011 8 8 55781 0.1047 0.4185 -0.25783 2011 8 9 55782 0.1061 0.4184 -0.25780 2011 8 10 55783 0.1075 0.4183 -0.25780 2011 8 11 55784 0.1089 0.4181 -0.25791 2011 8 12 55785 0.1103 0.4179 -0.25809 2011 8 13 55786 0.1117 0.4177 -0.25836 2011 8 14 55787 0.1131 0.4175 -0.25875 2011 8 15 55788 0.1144 0.4172 -0.25918 2011 8 16 55789 0.1158 0.4170 -0.25959 2011 8 17 55790 0.1171 0.4167 -0.25998 2011 8 18 55791 0.1184 0.4164 -0.26027 2011 8 19 55792 0.1198 0.4161 -0.26045 2011 8 20 55793 0.1211 0.4157 -0.26057 2011 8 21 55794 0.1224 0.4153 -0.26060 2011 8 22 55795 0.1236 0.4150 -0.26054 2011 8 23 55796 0.1249 0.4145 -0.26037 2011 8 24 55797 0.1262 0.4141 -0.26010 2011 8 25 55798 0.1274 0.4137 -0.25980 2011 8 26 55799 0.1287 0.4132 -0.25954 2011 8 27 55800 0.1299 0.4127 -0.25946 2011 8 28 55801 0.1311 0.4122 -0.25965 2011 8 29 55802 0.1323 0.4117 -0.26012 2011 8 30 55803 0.1335 0.4112 -0.26081 2011 8 31 55804 0.1346 0.4106 -0.26164 2011 9 1 55805 0.1358 0.4101 -0.26245 2011 9 2 55806 0.1369 0.4095 -0.26314 2011 9 3 55807 0.1381 0.4089 -0.26368 2011 9 4 55808 0.1392 0.4083 -0.26407 2011 9 5 55809 0.1403 0.4076 -0.26436 2011 9 6 55810 0.1413 0.4070 -0.26457 2011 9 7 55811 0.1424 0.4063 -0.26476 2011 9 8 55812 0.1435 0.4056 -0.26506 2011 9 9 55813 0.1445 0.4050 -0.26549 2011 9 10 55814 0.1455 0.4042 -0.26608 2011 9 11 55815 0.1465 0.4035 -0.26679 2011 9 12 55816 0.1475 0.4028 -0.26754 2011 9 13 55817 0.1485 0.4020 -0.26833 2011 9 14 55818 0.1494 0.4013 -0.26911 2011 9 15 55819 0.1504 0.4005 -0.26983 2011 9 16 55820 0.1513 0.3997 -0.27044 2011 9 17 55821 0.1522 0.3989 -0.27096 2011 9 18 55822 0.1531 0.3981 -0.27138 2011 9 19 55823 0.1539 0.3972 -0.27169 2011 9 20 55824 0.1548 0.3964 -0.27194 2011 9 21 55825 0.1556 0.3956 -0.27223 2011 9 22 55826 0.1564 0.3947 -0.27260 2011 9 23 55827 0.1572 0.3938 -0.27318 2011 9 24 55828 0.1580 0.3929 -0.27403 2011 9 25 55829 0.1588 0.3920 -0.27510 2011 9 26 55830 0.1595 0.3911 -0.27637 2011 9 27 55831 0.1602 0.3902 -0.27774 2011 9 28 55832 0.1609 0.3893 -0.27904 2011 9 29 55833 0.1616 0.3883 -0.28014 2011 9 30 55834 0.1623 0.3874 -0.28103 2011 10 1 55835 0.1629 0.3865 -0.28172 2011 10 2 55836 0.1636 0.3855 -0.28230 2011 10 3 55837 0.1642 0.3845 -0.28289 2011 10 4 55838 0.1648 0.3835 -0.28345 2011 10 5 55839 0.1653 0.3826 -0.28398 2011 10 6 55840 0.1659 0.3816 -0.28453 2011 10 7 55841 0.1664 0.3806 -0.28515 2011 10 8 55842 0.1670 0.3796 -0.28581 2011 10 9 55843 0.1675 0.3786 -0.28643 2011 10 10 55844 0.1679 0.3775 -0.28706 2011 10 11 55845 0.1684 0.3765 -0.28769 2011 10 12 55846 0.1689 0.3755 -0.28830 2011 10 13 55847 0.1693 0.3745 -0.28886 2011 10 14 55848 0.1697 0.3734 -0.28935 2011 10 15 55849 0.1701 0.3724 -0.28978 2011 10 16 55850 0.1704 0.3713 -0.29015 2011 10 17 55851 0.1708 0.3703 -0.29043 2011 10 18 55852 0.1711 0.3692 -0.29070 2011 10 19 55853 0.1714 0.3682 -0.29101 2011 10 20 55854 0.1717 0.3671 -0.29155 2011 10 21 55855 0.1720 0.3661 -0.29243 2011 10 22 55856 0.1723 0.3650 -0.29359 2011 10 23 55857 0.1725 0.3639 -0.29503 2011 10 24 55858 0.1727 0.3629 -0.29672 2011 10 25 55859 0.1729 0.3618 -0.29839 2011 10 26 55860 0.1731 0.3607 -0.29995 2011 10 27 55861 0.1733 0.3597 -0.30138 2011 10 28 55862 0.1734 0.3586 -0.30261 2011 10 29 55863 0.1736 0.3575 -0.30367 2011 10 30 55864 0.1737 0.3564 -0.30461 2011 10 31 55865 0.1738 0.3554 -0.30551 2011 11 1 55866 0.1739 0.3543 -0.30652 2011 11 2 55867 0.1739 0.3532 -0.30762 2011 11 3 55868 0.1740 0.3522 -0.30881 2011 11 4 55869 0.1740 0.3511 -0.31006 2011 11 5 55870 0.1740 0.3500 -0.31140 2011 11 6 55871 0.1740 0.3490 -0.31275 2011 11 7 55872 0.1740 0.3479 -0.31408 2011 11 8 55873 0.1739 0.3469 -0.31541 2011 11 9 55874 0.1738 0.3458 -0.31668 2011 11 10 55875 0.1738 0.3448 -0.31784 2011 11 11 55876 0.1737 0.3437 -0.31889 2011 11 12 55877 0.1736 0.3427 -0.31983 2011 11 13 55878 0.1734 0.3416 -0.32069 2011 11 14 55879 0.1733 0.3406 -0.32146 2011 11 15 55880 0.1732 0.3396 -0.32225 2011 11 16 55881 0.1730 0.3385 -0.32309 2011 11 17 55882 0.1728 0.3375 -0.32406 2011 11 18 55883 0.1726 0.3365 -0.32518 2011 11 19 55884 0.1724 0.3355 -0.32647 2011 11 20 55885 0.1721 0.3345 -0.32791 2011 11 21 55886 0.1719 0.3335 -0.32946 2011 11 22 55887 0.1716 0.3325 -0.33107 2011 11 23 55888 0.1714 0.3315 -0.33264 2011 11 24 55889 0.1711 0.3305 -0.33406 2011 11 25 55890 0.1708 0.3295 -0.33530 2011 11 26 55891 0.1705 0.3286 -0.33639 2011 11 27 55892 0.1701 0.3276 -0.33745 2011 11 28 55893 0.1698 0.3267 -0.33848 2011 11 29 55894 0.1694 0.3257 -0.33954 2011 11 30 55895 0.1691 0.3248 -0.34064 2011 12 1 55896 0.1687 0.3238 -0.34171 2011 12 2 55897 0.1683 0.3229 -0.34280 2011 12 3 55898 0.1679 0.3220 -0.34389 2011 12 4 55899 0.1675 0.3211 -0.34491 2011 12 5 55900 0.1670 0.3202 -0.34585 2011 12 6 55901 0.1666 0.3193 -0.34673 2011 12 7 55902 0.1662 0.3184 -0.34753 2011 12 8 55903 0.1657 0.3176 -0.34818 2011 12 9 55904 0.1652 0.3167 -0.34869 2011 12 10 55905 0.1647 0.3159 -0.34909 2011 12 11 55906 0.1643 0.3150 -0.34941 2011 12 12 55907 0.1638 0.3142 -0.34978 2011 12 13 55908 0.1632 0.3134 -0.35029 2011 12 14 55909 0.1627 0.3125 -0.35094 2011 12 15 55910 0.1622 0.3117 -0.35169 2011 12 16 55911 0.1616 0.3110 -0.35259 2011 12 17 55912 0.1611 0.3102 -0.35361 2011 12 18 55913 0.1605 0.3094 -0.35470 2011 12 19 55914 0.1600 0.3086 -0.35584 2011 12 20 55915 0.1594 0.3079 -0.35687 2011 12 21 55916 0.1588 0.3072 -0.35775 2011 12 22 55917 0.1582 0.3064 -0.35846 2011 12 23 55918 0.1576 0.3057 -0.35907 These predictions are based on all announced leap seconds. CELESTIAL POLE OFFSET SERIES: NEOS Celestial Pole Offset Series MJD dpsi error deps error (msec. of arc) 55534 -68.21 0.38 -6.85 0.22 55535 -68.00 0.15 -7.04 0.34 55536 -67.74 0.15 -7.08 0.34 55537 -67.47 0.10 -6.91 0.34 IAU2000A Celestial Pole Offset Series MJD dX error dY error (msec. of arc) 55534 0.251 0.151 -0.198 0.220 55535 0.263 0.060 -0.220 0.340 55536 0.273 0.060 -0.232 0.340 55537 0.281 0.040 -0.231 0.340 The recommended software to predict celestial pole offsets can be found at and software for the calculation of the dX and dY components with respect to IAU2000A Nutation/Precession Theory can be found at the web site in Chapter 5 Section 5.5 of the IERS Conventions.